Feature The engine and heater use LPG ( liquified petroleum gas ) or NG ( natural gas ) as energy sources. Industrial triplex pump with ceramic plungers. Forged brass manifold with variable pressure. Chemical injector with soap metering valve. Electric start. Thermal protector and battery. Steel frame with 10" pneumatic tire. With 3/8" quick-couplers. 5 quick nozzles: 0 degree(red), 15 degree( yellow ), 25 degree (green), 40 degree(white), 50 degree (black soap tip)